ZB 22 13 2023 03 Drainage Statement

17 Hydrograph Summary Report Hydraflow Hydrographs by Intelisolve v9.1 Hyd. Hydrograph Peak Time Time to Hyd. Inflow Maximum Total Hydrograph No. type flow interval peak volume hyd(s) elevation strge used description (origin) (cfs) (min) (min) (cuft) (ft) (cuft) 1 SCS Runoff 6.851 1 725 25,674 ---- ------ ------ Existing Site (Impervious) 2 SCS Runoff 1.215 1 726 3,839 ---- ------ ------ Existing Site (Pervious) 3 Combine 8.056 1 725 29,513 1, 2 ------ ------ Existing Total 5 SCS Runoff 5.953 1 725 22,312 ---- ------ ------ Proposed Site (Impervious) 6 SCS Runoff 2.048 1 726 6,553 ---- ------ ------ Proposed Site (Pervious) 7 Combine 7.991 1 725 28,864 5, 6 ------ ------ Proposed Total 2023-04-03 2, 10, 100 yr.gpw Return Period: 100 Year Wednesday, Apr 5, 2023